Precardinal
[医] 前主静脉的(胚)
🗣️ 情景例句
You just relax with Grandpa.
你只要放轻 陪爷爷就行了。
I think he's no good.
我想他不行。
Since its discovery, it has become a sort of potholers' Everest.
自从被发现以后，这个洞成了洞穴探险者的珠穆朗玛峰，